Add vdiv neon instructions (#1077)

Author: CryZe

crates/core_arch/src/aarch64/neon/generated.rs

@@ -1031,6 +1031,38 @@ pub unsafe fn vmulq_f64(a: float64x2_t, b: float64x2_t) -> float64x2_t {
     simd_mul(a, b)
 }
 
+/// Divide
+#[inline]
+#[target_feature(enable = "neon")]
+#[cfg_attr(test, assert_instr(fdiv))]
+pub unsafe fn vdiv_f32(a: float32x2_t, b: float32x2_t) -> float32x2_t {
+    simd_div(a, b)
+}
+
+/// Divide
+#[inline]
+#[target_feature(enable = "neon")]
+#[cfg_attr(test, assert_instr(fdiv))]
+pub unsafe fn vdivq_f32(a: float32x4_t, b: float32x4_t) -> float32x4_t {
+    simd_div(a, b)
+}
+
+/// Divide
+#[inline]
+#[target_feature(enable = "neon")]
+#[cfg_attr(test, assert_instr(fdiv))]
+pub unsafe fn vdiv_f64(a: float64x1_t, b: float64x1_t) -> float64x1_t {
+    simd_div(a, b)
+}
+
+/// Divide
+#[inline]
+#[target_feature(enable = "neon")]
+#[cfg_attr(test, assert_instr(fdiv))]
+pub unsafe fn vdivq_f64(a: float64x2_t, b: float64x2_t) -> float64x2_t {
+    simd_div(a, b)
+}
+
 /// Subtract
 #[inline]
 #[target_feature(enable = "neon")]
@@ -2112,6 +2144,42 @@ mod test {
         assert_eq!(r, e);
     }
 
+    #[simd_test(enable = "neon")]
+    unsafe fn test_vdiv_f32() {
+        let a: f32x2 = f32x2::new(2.0, 6.0);
+        let b: f32x2 = f32x2::new(1.0, 2.0);
+        let e: f32x2 = f32x2::new(2.0, 3.0);
+        let r: f32x2 = transmute(vdiv_f32(transmute(a), transmute(b)));
+        assert_eq!(r, e);
+    }
+
+    #[simd_test(enable = "neon")]
+    unsafe fn test_vdivq_f32() {
+        let a: f32x4 = f32x4::new(2.0, 6.0, 4.0, 10.0);
+        let b: f32x4 = f32x4::new(1.0, 2.0, 1.0, 2.0);
+        let e: f32x4 = f32x4::new(2.0, 3.0, 4.0, 5.0);
+        let r: f32x4 = transmute(vdivq_f32(transmute(a), transmute(b)));
+        assert_eq!(r, e);
+    }
+
+    #[simd_test(enable = "neon")]
+    unsafe fn test_vdiv_f64() {
+        let a: f64 = 2.0;
+        let b: f64 = 1.0;
+        let e: f64 = 2.0;
+        let r: f64 = transmute(vdiv_f64(transmute(a), transmute(b)));
+        assert_eq!(r, e);
+    }
+
+    #[simd_test(enable = "neon")]
+    unsafe fn test_vdivq_f64() {
+        let a: f64x2 = f64x2::new(2.0, 6.0);
+        let b: f64x2 = f64x2::new(1.0, 2.0);
+        let e: f64x2 = f64x2::new(2.0, 3.0);
+        let r: f64x2 = transmute(vdivq_f64(transmute(a), transmute(b)));
+        assert_eq!(r, e);
+    }
+
     #[simd_test(enable = "neon")]
     unsafe fn test_vsub_f64() {
         let a: f64 = 1.0;

crates/stdarch-gen/neon.spec

@@ -601,6 +601,15 @@ generate float64x*_t
 arm = vmul.
 generate float*_t
 
+/// Divide
+name = vdiv
+fn = simd_div
+a = 2.0, 6.0, 4.0, 10.0
+b = 1.0, 2.0, 1.0, 2.0
+validate 2.0, 3.0, 4.0, 5.0
+
+aarch64 = fdiv
+generate float*_t, float64x*_t
 
 /// Subtract
 name = vsub